Screw



FIG. 1 is a top side perspective view of our new screw design;

FIG. 2 is a top view thereof;

FIG. 3 is a side view thereof; and,

FIG. 4 is a side view thereof.

The portion of the screw shown in phantom does not form any portion of the present invention. 

I claim the ornamental design for a screw, as shown and described. 